OPW Visi-Flo Sight Flow Indicators
Visi-Flo® sight flow indicators by OPW provide a quick, reliable and economical way to verify flow in process lines. They also allow you to quickly monitor fluid color and clarity. And all feature dual glass for see-through visibility. Propeller, flapper, drip-tube and plain types are available in 1/4″ to 12″ sizes in steel, stainless steel, bronze, ductile iron and specialty alloys.